From 3a0fae39873c9c7d73dc978888e45b87ad27d44e Mon Sep 17 00:00:00 2001
From: Justus Winter <4winter@informatik.uni-hamburg.de>
Date: Tue, 30 Sep 2014 03:58:43 +0200
Subject: ipc: use fast modulo operation in local hash table

* ipc/ipc_table.h: Document that table sizes must be powers of two.
* ipc/ipc_hash.c (IH_LOCAL_HASH): Use fast modulo operation.
---
 ipc/ipc_table.h | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'ipc/ipc_table.h')

diff --git a/ipc/ipc_table.h b/ipc/ipc_table.h
index 3cc5f561..311b9a78 100644
--- a/ipc/ipc_table.h
+++ b/ipc/ipc_table.h
@@ -45,6 +45,8 @@
  *	an ipc_table_size structure.  These structures must
  *	be elements of an array, ipc_table_entries.
  *
+ *	Every its_size value must must be a power of two.
+ *
  *	The array must end with two elements with the same its_size value.
  *	Except for the terminating element, the its_size values must
  *	be strictly increasing.  The largest (last) its_size value
-- 
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